[2] In the 2013 Maltese general election, Grima, a member of the Labour Party, stood as a candidate for the Parliament of Malta in District 9.
[3] In 2016, following the resignation of District 9 incumbent Leo Brincat, Grima won the special election to succeed him in parliament.
[5] During this term, Grima was one of several high-ranking Labour MPs who revolted against Muscat, who was embroiled in a corruption scandal.
[9][10] Immediately after his appointment as minister, The Shift, an investigative newspaper in Malta, revealed that one of Grima's closest supporters, an official for a water polo team, was suspended from his position for levying death threats against an official of the Aquatic Sports Association of Malta.
[11] During his time as minister, Grima promoted inclusivity in schools and opposed a proposal for mandatory COVID-19 vaccinations for children.